SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<p>12345, 23, 64229, 359</p>

JavaScript

$("p").html(function(i, h) {
  return h.replace(/\d+/g, function(m) { return "http://www.example.com/?id=" + m; });
});